Chotenthetsera mpweya chimagwira ntchito podutsa mpweya kudzera mu chubu chachitali (nthawi zambiri chimakulungidwa mu solenoid), zomwe zimathandiza kuti kutentha kutuluke mumlengalenga wozungulira. Zitsulo monga mkuwa zimatenthetsa bwino ndipo nthawi zambiri zimagwiritsidwa ntchito kunyamula nthunzi. Pofuna kukonza bwino ntchito ya chotenthetsera, ma heat sinks okhala ndi mphamvu yabwino kwambiri yoyendetsera kutentha nthawi zambiri amawonjezeredwa m'mapaipi kuti awonjezere malo otenthetsera kutentha kuti afulumizitse kutentha, ndipo mpweya umayendetsedwa mwachangu ndi fan kuti uchotse kutentha. Mfundo yoziziritsira ya firiji yonse ndi yakuti chotenthetsera chimakanikiza chogwirira ntchito kuchokera ku kutentha kochepa ndi mpweya wopanikizika pang'ono kupita ku kutentha kwakukulu ndi mpweya wopanikizika kwambiri, kenako chimasungunuka kukhala kutentha kwapakati ndi madzi opanikizika kwambiri kudzera mu chotenthetsera. Valvu ya throttle ikakokedwa, imakhala madzi otenthetsera otsika ndi madzi opanikizika pang'ono. Chotenthetsera chogwira ntchito cha madzi opanikizika pang'ono ndi madzi opanikizika pang'ono chimatumizidwa ku chotenthetsera, komwe chotenthetsera chimatenga kutentha ndi kusungunuka kupita ku nthunzi yotentha yochepa ndi yopanikizika pang'ono, yomwe imatumizidwanso ku compressor, motero kumaliza kuzungulira kwa firiji. Dongosolo loziziritsira la nthunzi lokhala ndi gawo limodzi limapangidwa ndi zigawo zinayi zazikulu: compressor yoziziritsira, condenser, valavu yotsekera ndi evaporator. Amalumikizidwa motsatizana ndi mapaipi kuti apange dongosolo lotsekedwa. Refrigerant imazungulira nthawi zonse mu dongosolo, imasintha momwe ilili ndikusinthanitsa kutentha ndi dziko lakunja.
